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—EPDS SERVICE, SOUTH AFRICA, FRANS BOUWER, 2018.

Retrofit SolutionsOne-Fit ,UFES, Reyrolle LMAMEU – Namibia ,March 2018

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1. Safety

2. One-Fit overview

3. UFES overview

4. Reyrolle LM-Switchgear retrofit solutions

5. Questions and Answers

March 15, 2018 Slide 2

Retrofit Agenda

—Safety

March 15, 2018

—Safety

March 15, 2018 Slide 4

Priority No. 1

ABB Safety Drive

• Arch Flash Clothing min. of 8.9 cal/cmˆ²

• Technician Tool kits

• Driving at Night Policy

• People’s lives and Safety will be No.1

• Stop to Work if there is a Safety compromise

—ONE-FITCircuit Breaker Retrofit solution to all Switchgear

March 15, 2018

—OneFit

March 15, 2018 Slide 6

The One-Fit offer to customise existing Switchgear includes the following

• 3D Scan of Existing Switchgear CB compartments

• Design Adaption system and Cassette

• Mechanical and Electrical testing of design

• Type Testing of solution

• Proposal to customers

• Installation and Commissioning

Retrofit Circuit Breakers on non-ABB 11kV Indoor Switchgear

—OneFit

March 15, 2018 Slide 7

Benefits Range of 11kV Circuit Breakers on offer

• Added Safety features by adding Behind Door Racking

• Get Oil CB’s off the system

• More advanced Interlocking

• New CB with new life and higher Technology , less maintenance

Benefit and range

—OneFit

March 15, 2018 Slide 8

SBV3- To ABB VD4 with One-Fit Other

Examples

—UFESABB has developed an Ultra Fast Earthing Switch , which opens the possibility for new arc protection concepts for MV Switchgear systems. It is an innovative combination of the ABB technologies vacuum interrupter and Is-Limiter

March 15, 2018

—UFES

March 15, 2018 Slide 10

Internal Arc faults on the system Example of Internal Arc fault

• Use GRP and steel as enclosure material

• Patented double layer design

• Combines benefits of steel and concrete into one solution

• Main Features:

Fully type tested design, including Internal arc fault

Lightweight

Corrosion resistance

Thermal insulated enclosure

Smart grid compatibility

Arc Faults

The reliable

—UFES

March 15, 2018 Slide 11

UFES operating description UFES components

• A device as small as a 22kv insulator offers enhanced protection for your switchgear by minimizing of all three effects

• The UFES arc protection system channels the uncontrolled release of energy by the arc into a solid metal , 3 phase connection to earth potential

• Triggered by electronic device using light and current

• As this short-circuit is of considerably lower impedance than the fault, the fault current commutates from the arc to the defined short-circuit created by the Primary Switching Element, causing the arc fault voltage to break down and the arc to be extinguished almost immediately. The resulting controlled flow of earth fault current is then finally shut down by the feeder circuit-breaker.

• The internal arc will be extinguished within an operating time of < 4ms after detection of the fault

Operation

—UFES

March 15, 2018 Slide 12

Other Protection devises UFES Operating times

• Conventional Protection Device

Detection by standby relay – clearing of arc fault by upstream circuit breaker

Arc fault duration 200-300ms

Dramatic consequences possible

Fire/Explosion hazard, heavy injuries of personnel

• Fast-acting relay with supplementary equipment

Fast protection by special protection relay – clearing of arc fault by upstream breaker

Arc fault duration typical 50-100ms

Limited consequences – for equipment and switchgear (depending on design)

Comparison

• UFES system

Ultra-fast extinction of the internal arc by activating the UFES primary element

Final clearing of fault current by upstream circuit breaker

Ar fault duration < 4ms

NO consequence to be expected – prevention of any thermal damage and reduction of pressure rise

—UFES

March 15, 2018 Slide 13

Short-circuit current during Arc fault Energy curve during internal Arc

Current and Energy

—UFES

March 15, 2018 Slide 14

Effect of an internal arc fault Pressure curve Real life example of what pressure rise does to a S/S

Pressure Rise

—UFES

March 15, 2018 Slide 15

Busbar compartment after internal arc faultWithout active protection ( 50ka/100ms)

Busbar compartment after internal arc fault with active protection by UFES system

Comparison of busbar faults

—UFES

March 15, 2018 Slide 16

UFES devise Installation options

Construction

—UFES

March 15, 2018 Slide 17

In the past E-Houses had been used mainly in “traditional” market segments such as O&G, mining and utilities. The approach in these segments is driven by detailed and sometimes demanding specifications.

New and fast developing market segments like renewables, datacenters, ship to shore, temp power, infrastructure etc, require solutions that are fast to deliver, standardized and/or modularized.

The E-House is a switching substation utilizing one of the following designs;

• Containerized Solution

• Modularized Design

• Single Large Structures

• Skid Mounted Modules

• Mobile Substation

Typical Installation with 2 x Incomers and 1 x Bussection

—Reyrolle LM- Retrofit.

March 15, 2018

—Reyrolle LM- Retrofit

March 15, 2018 Slide 19

ABB Background in Reyrolle retrofits Reasons for retrofitting

• Reyrolle SA was bought by ABB in 2002 and we kept the knowledge and experience on Reyrolle Switchgear in ABB

• We have existing contracts in place and done over 2000 retrofits so far, this includes CoCT , London underground , Saudi Arabia , Japan Elect. et

• Fully Type tested design , including internal arc fault ratings

• Proven design with added safety features

• All existing Reyrolle design drawings are still available in ABB

• Keep strategic spares for legacy product

ABB experience and reasons for retrofitting

• Unsafe Switchgear on the system , old , unreliable , Oil filled

• Legacy product with limited to no spares availability

• Much cheaper to upgrade and retrofit than replacing the Switchgear

• Down-time to retrofit is much less than replacing

• No MV cable work necessary

• Budget can be done and planned before a fault takes away the complete substation

—Reyrolle LM- Retrofit

March 15, 2018 Slide 20

Everything was fine ? Complete main Substation destroyed

Reasons for retrofitting

—Reyrolle LM-Retrofit

March 15, 2018 Slide 21

Offering Existing Circuit Breakers

• Replace any existing Reyrolle LM-Type circuit breaker with modern HD4 or VD4 breaker

• Upgrade Interlocking with added safety

• Replace side-wipe contact configuration with plug & socket arrangement , this gives reliable connection between panel and breaker plus extra wiring to add signals and control for SCADA

• Upgrading of shutter box arrangement to help with self alignment

• Adding of behind-close door feature for safety , ARC Vent type tested

• Adding Arc Vent features to the rest of the panel if required

• Adding / upgrading protection relays

• Adding remote switching and motor charging of CBs

What ABB can offer

—Reyrolle LM-Retrofit

March 15, 2018 Slide 22

Retrofit loose material kit , behind door racking LMT mk1 back and 2000A LM Panels

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—Reyrolle LM-Retrofit

March 15, 2018 Slide 23

Retrofit 11kV VD4-LM Circuit Breaker Side wipe conversion to plug & socket

VD4 with plug and socket arrangement

—Reyrolle LM-Retrofit

March 15, 2018 Slide 24

Abattoir Substation , completed 11 March 2018 City of Cape Town – 630A LM to VD4 retrofit 2017 = 471

Complete

—Reyrolle LM-Extentions

March 15, 2018 Slide 25

Reyrolle to Unigear Joggle with Riser Panel LM-Unigear Riser-Unigear

—Questions ?.

March 15, 2018